2 Pack 8-Wheel Trolley Assembly fits 1-5/8″ Strut Channel Electric Hoist Roller
【Strut Trolley Rollers Rated Load Capacity】 At 300 RPM: 880 lbs | 100 RPM: 1480 lbs | 50 RPM: 1780 lbs | 25 RPM: 2180 lbs. Trolley top：accommodates screw heads (max 0.5″W×0.2″H). Note！ If the holes on the back of the 1-5/8″ high Strut Channel are too large, the screws will pass through the holes.resulting in failure to secure properly.
